scholarly journals Evaluation of the Environmental Sustainability of a Stirling Cycle-Based Heat Pump Using LCA

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4469
Author(s):  
Umara Khan ◽  
Ron Zevenhoven ◽  
Tor-Martin Tveit
Keyword(s):  
High Temperature ◽  
Heat Pump ◽  
Waste Heat ◽  
Heat Pumps ◽  
Heat Output ◽  
Environmental Footprint ◽  
Stirling Cycle ◽  
Impact Reduction ◽  
Temperature Heat ◽  
Very High

Heat pumps are increasingly seen as efficient and cost-effective heating systems also in industrial applications. They can drastically reduce the carbon footprint of heating by utilizing waste heat and renewable electricity. Recent research on Stirling cycle-based very high temperature heat pumps is motivated by their promising role in addressing global environmental and energy-related challenges. Evaluating the environmental footprint of a heat pump is not easy, and the impacts of Stirling cycle-based heat pumps, with a relatively high temperature lift have received little attention. In this work, the environmental footprint of a Stirling cycle-based very high temperature heat pump is evaluated using a “cradle to grave” LCA approach. The results for 15 years of use (including manufacturing phase, operation phase, and decommissioning) of a 500-kW heat output rate system are compared with those of natural gas- and oil-fired boilers. It is found that, for the Stirling cycle-based HP, the global warming potential after of 15 years of use is nearly −5000 kg CO2 equivalent. The Stirling cycle-based HP offers an environmental impact reduction of at least 10% up to over 40% in the categories climate change, photochemical ozone formation, and ozone depletion when compared to gas- and oil-fired boilers, respectively.

scholarly journals Prediction of Stirling-Cycle-Based Heat Pump Performance and Environmental Footprint with Exergy Analysis and LCA

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8478
Author(s):  
Umara Khan ◽  
Ron Zevenhoven ◽  
Lydia Stougie ◽  
Tor-Martin Tveit
Keyword(s):  
Life Cycle ◽  
High Temperature ◽  
Heat Pump ◽  
High Performance ◽  
Exergy Analysis ◽  
Waste Heat ◽  
Heat Pumps ◽  
Fuel Oil ◽  
Environmental Footprint ◽  
Stirling Cycle

The use of Stirling-cycle-based heat pumps in high-temperature applications and waste heat recovery at an industrial scale is of increasing interest due to the promising role in producing thermal energy with zero CO2 emissions. This paper analyzes one such technology as developed by Olvondo Technology and installed at the pharmaceutical company AstraZeneca in Sweden. In this application, the heat pump used roughly equal amounts of waste heat and electricity and generated 500 kW of steam at 10 bar. To develop and widen the use of a high-performance high-temperature heat pump that is both economically and environmentally viable and attractive, various analysis tools such as exergy analysis and life cycle assessment (LCA) can be combined. The total cumulative exergy loss (TCExL) method used in this study determines total exergy losses caused throughout the life cycle of the heat pump. Moreover, an LCA study using SimaPro was conducted, which provides insight into the different emissions and the overall environmental footprint resulting from the construction, operation (for example, 1, 8, and 15 years), and decommissioning phases of the heat pump. The combined results were compared with those of a fossil fuel oil boiler (OB), a bio-oil boiler (BOB), a natural gas-fired boiler (NGB), and a biogas boiler (BGB).

Review Status on High Temperature Heat Pumps

2012 ◽  
Vol 170-173 ◽  
pp. 2550-2553 ◽  
Author(s):  
Guang Hui Zhou ◽  
Shi Wei Feng ◽  
Si Qi Cui ◽  
Yin Liu
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Heat Pump ◽  
Heat Pumps ◽  
Industrial Processes ◽  
Paper Briefly ◽  
Development Status ◽  
Temperature Heat ◽  
Waste Energy ◽  
Higher Temperature

A heat pump is a kind of energy saving equipment. It can effectively improve the grade of low temperature renewable and waste energy. Because of the increasing demands for higher temperature energy in many industrial processes and other fields, the development and research of high temperature heat pumps have been becoming more and more pressing and significant. This paper briefly summarizes the development status in two aspects: the development of working fluids and system features and characteristics of different cycle types.

scholarly journals Experimental exergy and energy analysis of a novel high-temperature heat pump with scroll compressor for waste heat recovery

2019 ◽  
Vol 253 ◽  
pp. 113504 ◽  
Author(s):  
Carlos Mateu-Royo ◽  
Joaquín Navarro-Esbrí ◽  
Adrián Mota-Babiloni ◽  
Francisco Molés ◽  
Marta Amat-Albuixech
Keyword(s):  
High Temperature ◽  
Heat Pump ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Energy Analysis ◽  
Waste Heat ◽  
Scroll Compressor ◽  
Temperature Heat ◽  
High Temperature Heat Pump

Combined Thermal Engine-Heat Pump Systems for Low-Temperature Heat Generation

1976 ◽  
Vol 190 (1) ◽  
pp. 255-265 ◽  
Author(s):  
G. Angelino ◽  
P. Ferrari ◽  
G. Giglioli ◽  
E. Macchi
Keyword(s):  
Low Temperature ◽  
Heat Pump ◽  
Heat Generation ◽  
Waste Heat ◽  
Combustion Engine ◽  
Heat Output ◽  
Direct Drive ◽  
Temperature Heat ◽  
Organic Fluids ◽  
External Combustion

SYNOPSIS A system is described for low-temperature heat generation for space heating envisaging the adoption of an organic fluid external combustion engine as the direct drive for a heat pump. Waste heat from the engine condenser contributes a substantial fraction of the overall heat output. Progress in experimental work to ascertain the suitability of organic fluids to operate at comparatively high temperature without appreciable decomposition or corrosive action on materials is reported. Results are given of a computation program predicting the performance of systems of various capacity. For the examples considered yearly fuel consumption was calculated to range between 41 and 48% of that of a conventional plant.

Temperature Transformation for High-Temperature Heat Pumps

1988 ◽  
Vol 110 (4) ◽  
pp. 652-657 ◽  
Author(s):  
R. Radermacher ◽  
L. A. Howe
Keyword(s):  
High Temperature ◽  
Heat Pump ◽  
Heat Pumps ◽  
Pure Component ◽  
Effect Of Temperature ◽  
Working Fluid ◽  
Fluid Mixture ◽  
Temperature Transformation ◽  
Temperature Levels ◽  
Very High

A heat pump cycle is introduced that allows heat pumping between two very high temperature levels, while the suction temperature of the working fluid vapor passing through the compressor is considerably lower. This effect of “Temperature Transformation” is achieved by using a working fluid mixture instead of a single pure component and by employing an unconventional cycle design. The proposed cycle allows the extension of heat pump applications to high temperature levels without encountering operating problems for conventional compressors. This cycle and its features are explained. Its performance has been calculated and the results are presented and discussed.

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